I have to stop due to teaching duties. First thing to do during the next session : improve paragraph 1.2.2 in the style of 1.2.1. Then I have to finish this section. After that, it seems logical to me to write a section where I define the notion of 'weakly generating set of the k-cells' and 'basis of the k-cells' of a n-category and then a section where I explain how to compute colimits in nCat. Maybe the order should be 'section on basis' then 'section on generating cells' then 'section on colimits'.

Je prepare le terrain pour toute la partie sur le calcul des colimites dans ooCat. Il va peut etre falloir introduire plus de notations

I started doing what I said in the previous commit. I also added a file recyclebin.tex  that contains the former version omegacat.tex

I started writing up the definitions of oo-graphs, oo-magmas and oo-categories. I would like to try another approach where I start with the finite case (n-graphs, n-magmas, etc.) and define the oo counterparts as projective limits